Influence of diluent alkyl substitution on the extraction of Am(III) and Eu(III) by a 6,6’-bis(1,2,4-triazin-3-yl)-2,2’-bipyridine ligand dissolved in alkylated cyclohexanone Diluents

Distler, Petr, Spendlikova, Irena, John, Jan, Harwood, Laurence, Hudson, Michael and Lewis, Frank (2012) Influence of diluent alkyl substitution on the extraction of Am(III) and Eu(III) by a 6,6’-bis(1,2,4-triazin-3-yl)-2,2’-bipyridine ligand dissolved in alkylated cyclohexanone Diluents. Radiochimica Acta, 100 (10). pp. 747-752. ISSN 2193-3405

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Official URL: http://dx.doi.org/10.1524/ract.2012.1949

Abstract

Several alkylated cyclohexanones were investigated as potential diluents for the selective extraction of Am(III) from Eu(III) from nitric acid solutions by the CyMe4-BTBP ligand. No significant extraction of either of the metal ions was observed for these diluents themselves. In the extractions from 1 M HNO3, 3-methylcyclohexanone and 4-methylcyclohexanone gave comparable results to cyclohexanone whereas in the extractions from 4 M HNO3, 2-methylcyclohexanone, 3-methylcyclohexanone and 4-methylcyclohexanone all gave superior results. For the monomethylated diluents, DAm and SFAm/Eu decreased in the order of alkyl substitution 2 > 4 ~ 3. However, alkyl substitution of cyclohexanone significantly slows down the extraction kinetics compared to cyclohexanone, and the position of alkyl substitution was found to play an important role in the solvents properties. 3-Methylcyclohexanone was identified as the most promising of the diluents

Item Type: Article
Uncontrolled Keywords: CyMe4-BTBP; Cyclohexanone; extraction; separation factor; Americium
Subjects: F100 Chemistry
H800 Chemical, Process and Energy Engineering
Department: Faculties > Health and Life Sciences > Applied Sciences
Depositing User: Frank Lewis
Date Deposited: 02 Jan 2013 11:43
Last Modified: 28 Oct 2017 19:52
URI: http://nrl.northumbria.ac.uk/id/eprint/10885

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